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Weather in Onslow
Western Australia, 7 m · continuously updated
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Temperature · last 4 and next 28 hours
Onslow weather: the next 24 hours
Updated hourly.
Onslow 14-day forecast
Two-week trend.
Sun and golden hours
Sunrise –, golden light until –
Sunset –, golden light from –
–
Air quality
European index, modelled by Copernicus (CAMS).
UV index
Daily maximum — protection advised from 3.
Freezing level
Snow settles about 300 m below it.
Around Onslow
Neighbouring towns, as the crow flies.
The observed climate near Onslow
The weather station nearest to Onslow, Onslow Airport located 10 m above sea level, is 4 km away; its records cover 1941–2025. In November, the mean temperature there is 27.7 °C over 1991–2020, with about 2 mm of rain. The warmest month ever measured is January 2003 (32.9 °C), the coldest July 1957 (17.1 °C). See the full series of Onslow Airport
Today in Onslow
- Very high UV index: 9.3 around 13:00. Stay in the shade between 9:00 and 17:00. Fair skin burns in about 21 minutes: avoid exposure, cover up and use SPF 50. How it is calculated
- Heat: up to 39.4 °C in the next three days (days at 30 °C or more over the next 14: 6). The air does not drop below 26 °C in the next 48 hours: ventilating at night will not cool the house. Keep shutters closed by day, and drink regularly. Nights at 20 °C or more over the next 14 days: 7. How it is calculated
- Best time to air the house: between 18:00 and 21:00. The outdoor dew point drops to 7.9 °C; once warmed to 20 °C, that air holds only 46 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- Washing outside: around 10:00. With 22 % humidity, 36.2 °C and wind at 12.1 km/h, a load of cotton washing dries in about 1 h. How it is calculated
- Garden: barely 0 mm of rain in 48 h against a need of about 20.5 mm. Water tomorrow, between 5:00 and 8:00, while it is cool: allow about 20 L/m². How it is calculated
- Terrace and barbecue between 18:00 and 23:00: dry, wind at 18 km/h, 35 °C at 8 pm. A lovely evening. How it is calculated
Calculated from Open-Meteo forecasts of 2026-11-05 12:32 (local time): model values, not measurements. All of today's advice
7-day forecast for Onslow
Today (Thursday 5 Nov) in Onslow: overcast, 26 to 39 °C, precipitation 0.0 mm (2 %), wind up to 22 km/h. Tomorrow: partly cloudy, 27 to 38 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | overcast | 26 °C | 39 °C | 0.0 mm | 22 km/h |
| Tomorrow | partly cloudy | 27 °C | 38 °C | 0.0 mm | 22 km/h |
| Sat 7 Nov | overcast | 24 °C | 36 °C | 0.0 mm | 22 km/h |
| Sun 8 Nov | overcast | 24 °C | 37 °C | 0.0 mm | 21 km/h |
| Mon 9 Nov | overcast | 23 °C | 34 °C | 0.0 mm | 22 km/h |
| Tue 10 Nov | light drizzle | 21 °C | 30 °C | 0.6 mm | 23 km/h |
| Wed 11 Nov | showers | 20 °C | 25 °C | 12.6 mm | 16 km/h |
Tomorrow's weather in Onslow
Tomorrow, Friday 6 Nov, in Onslow: partly cloudy, from 27 to 38 °C, 0.0 mm of precipitation (probability 2 %), wind up to 22 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  partly cloudy | 30 °C | 0.0 mm | 0 % | 21 km/h |
| 03:00 | partly cloudy | 28 °C | 0.0 mm | 0 % | 21 km/h |
| 06:00 | partly cloudy | 27 °C | 0.0 mm | 0 % | 14 km/h |
| 09:00 |  mostly sunny | 33 °C | 0.0 mm | 1 % | 15 km/h |
| 12:00 | sunny | 38 °C | 0.0 mm | 2 % | 9 km/h |
| 15:00 | sunny | 37 °C | 0.0 mm | 1 % | 22 km/h |
| 18:00 | sunny | 34 °C | 0.0 mm | 0 % | 19 km/h |
| 21:00 | sunny | 30 °C | 0.0 mm | 0 % | 21 km/h |
Frequently asked questions
Will it rain tomorrow in Onslow?
No significant rain expected (0.0 mm forecast).
How warm will it be tomorrow in Onslow?
Between 27 and 38 °C.
The weekend
This weekend in Onslow: Saturday overcast, 24 to 36 °C, Sunday overcast, 24 to 37 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 7 Nov |  overcast | 24 °C | 36 °C | 0.0 mm | 22 km/h |
| Sun 8 Nov | overcast | 24 °C | 37 °C | 0.0 mm | 21 km/h |
Hour by hour
The next 48 hours in Onslow, hour by hour: temperature from 24 to 39 °C, 0.0 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 12:00 | overcast | 39 °C | 0.0 mm | 1 % | 9 km/h |
| 13:00 | mostly sunny | 39 °C | 0.0 mm | 2 % | 13 km/h |
| 14:00 | partly cloudy | 39 °C | 0.0 mm | 2 % | 18 km/h |
| 15:00 | partly cloudy | 39 °C | 0.0 mm | 2 % | 20 km/h |
| 16:00 | partly cloudy | 39 °C | 0.0 mm | 1 % | 19 km/h |
| 17:00 | sunny | 39 °C | 0.0 mm | 0 % | 18 km/h |
| 18:00 | sunny | 38 °C | 0.0 mm | 0 % | 21 km/h |
| 19:00 | sunny | 37 °C | 0.0 mm | 0 % | 20 km/h |
| 20:00 | partly cloudy | 35 °C | 0.0 mm | 0 % | 16 km/h |
| 21:00 | overcast | 34 °C | 0.0 mm | 0 % | 16 km/h |
| 22:00 | overcast | 33 °C | 0.0 mm | 0 % | 20 km/h |
| 23:00 | overcast | 31 °C | 0.0 mm | 0 % | 22 km/h |
| 00:00 | partly cloudy | 30 °C | 0.0 mm | 0 % | 21 km/h |
| 01:00 | mostly sunny | 30 °C | 0.0 mm | 0 % | 18 km/h |
| 02:00 | mostly sunny | 29 °C | 0.0 mm | 0 % | 20 km/h |
| 03:00 | partly cloudy | 28 °C | 0.0 mm | 0 % | 21 km/h |
| 04:00 | mostly sunny | 28 °C | 0.0 mm | 0 % | 16 km/h |
| 05:00 | mostly sunny | 28 °C | 0.0 mm | 0 % | 16 km/h |
| 06:00 | partly cloudy | 27 °C | 0.0 mm | 0 % | 14 km/h |
| 07:00 | mostly sunny | 29 °C | 0.0 mm | 0 % | 14 km/h |
| 08:00 | mostly sunny | 30 °C | 0.0 mm | 0 % | 16 km/h |
| 09:00 | mostly sunny | 33 °C | 0.0 mm | 1 % | 15 km/h |
| 10:00 | mostly sunny | 35 °C | 0.0 mm | 1 % | 12 km/h |
| 11:00 | sunny | 37 °C | 0.0 mm | 2 % | 9 km/h |
| 12:00 | sunny | 38 °C | 0.0 mm | 2 % | 9 km/h |
| 13:00 | sunny | 37 °C | 0.0 mm | 2 % | 16 km/h |
| 14:00 | sunny | 37 °C | 0.0 mm | 2 % | 20 km/h |
| 15:00 | sunny | 37 °C | 0.0 mm | 1 % | 22 km/h |
| 16:00 | sunny | 36 °C | 0.0 mm | 1 % | 21 km/h |
| 17:00 | sunny | 35 °C | 0.0 mm | 0 % | 20 km/h |
| 18:00 | sunny | 34 °C | 0.0 mm | 0 % | 19 km/h |
| 19:00 | sunny | 33 °C | 0.0 mm | 0 % | 19 km/h |
| 20:00 | sunny | 31 °C | 0.0 mm | 0 % | 20 km/h |
| 21:00 | sunny | 30 °C | 0.0 mm | 0 % | 21 km/h |
| 22:00 | mostly sunny | 29 °C | 0.0 mm | 0 % | 21 km/h |
| 23:00 | mostly sunny | 28 °C | 0.0 mm | 0 % | 22 km/h |
| 00:00 | mostly sunny | 27 °C | 0.0 mm | 0 % | 22 km/h |
| 01:00 | overcast | 27 °C | 0.0 mm | 0 % | 22 km/h |
| 02:00 | overcast | 26 °C | 0.0 mm | 0 % | 22 km/h |
| 03:00 | overcast | 26 °C | 0.0 mm | 0 % | 20 km/h |
| 04:00 | overcast | 25 °C | 0.0 mm | 0 % | 19 km/h |
| 05:00 | overcast | 24 °C | 0.0 mm | 0 % | 19 km/h |
| 06:00 | overcast | 24 °C | 0.0 mm | 0 % | 19 km/h |
| 07:00 | overcast | 25 °C | 0.0 mm | 0 % | 18 km/h |
| 08:00 | overcast | 27 °C | 0.0 mm | 0 % | 19 km/h |
| 09:00 | overcast | 30 °C | 0.0 mm | 0 % | 15 km/h |
| 10:00 | partly cloudy | 33 °C | 0.0 mm | 0 % | 9 km/h |
| 11:00 | sunny | 35 °C | 0.0 mm | 0 % | 4 km/h |
Location of Onslow
Onslow lies at 7 m, 112 m below the average of the 104 places we cover in Western Australia (119 m). That makes it the 7th lowest of the 104. The main town, Perth (Western Australia), lies 1149 km to the south. The nearest places we cover are Exmouth (107 km to the west), Dampier (198 km to the north-east), Nickol (201 km to the north-east) and Karratha (206 km to the north-east). With about 1,157 inhabitants according to GeoNames, Onslow is the 97th largest of the 104 places we cover in Western Australia.
Today is 6.3 °C above the November normal (33.1 °C).
Climate of Onslow: 1991–2020 normals
In Onslow, January is typically the warmest month (up to 35.6 °C on average), while July is the coldest at 15.2 °C. February sees the most rain, with around 57 mm.
By season (average highs, 1991–2020 normals): winter 25.8 °C and 57 mm of rain, spring 31.4 °C and 2 mm, summer 35.2 °C and 90 mm, autumn 32.4 °C and 97 mm. The wettest season is autumn (40 % of the annual total), the driest spring (1 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | 35.6 | 26.0 | 22 | 3 |
| February | 35.2 | 26.6 | 57 | 4 |
| March | 35.2 | 26.2 | 46 | 3 |
| April | 33.0 | 23.7 | 19 | 2 |
| May | 29.1 | 19.6 | 32 | 2 |
| June | 25.4 | 16.4 | 41 | 4 |
| July | 25.2 | 15.2 | 13 | 2 |
| August | 26.9 | 15.9 | 2 | 0 |
| September | 29.0 | 17.7 | 1 | 0 |
| October | 32.1 | 20.4 | 0 | 0 |
| November | 33.1 | 21.9 | 1 | 0 |
| December | 34.8 | 24.4 | 11 | 1 |
Compared with Perth (Western Australia), the main town 1149 km to the south, highs in the warmest month are 5.1 °C higher here, and the year brings 304 mm less precipitation. In no month does the average low fall below 0 °C; in 12 months the average high exceeds 20 °C (January, February, March, April, May, June, July, August, September, October, November and December).
Among the 104 places we cover in Western Australia whose normals come from the ERA5 reanalysis, Onslow ranks 9th for summer warmth and 100th for annual precipitation. The warmest summers are in Paraburdoo and the coolest in Dunsborough; the wettest year is in Kununurra and the driest in Carnarvon.
What is the warmest month in Onslow?
The warmest month in Onslow is typically January, averaging 35.6 °C (1991–2020 normal). The coldest is July, at 15.2 °C.
How many rainy days does Onslow get per year?
Onslow sees about 21 rainy days a year, adding up to roughly 246 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Onslow?
Between January and July, the temperature gap in Onslow runs to about 20.4 °C, based on the 1991–2020 normals.